// src/directives/waves.js
import './waves.css'
// 水波纹
export default {
    bind(el, binding) {
        el.addEventListener(
            'click',
            (e) => {
                const customOpts = Object.assign({}, binding.value)
                const opts = Object.assign(
                    {
                        ele: el, // 波纹作用的目标元素
                        type: 'hit', // hit 点击位置扩散 center中心点扩展
                        // color: '#b45dea', // 波纹颜色
                        color: 'rgba(0, 0, 0, 0.15)', // 波纹颜色
                    },
                    customOpts
                )
                const target = opts.ele
                if (target) {
                    target.style.position = 'relative'
                    target.style.overflow = 'hidden'
                    const rect = target.getBoundingClientRect()
                    let ripple = target.querySelector('.waves-ripple')
                    if (!ripple) {
                        ripple = document.createElement('span')
                        ripple.className = 'waves-ripple'
                        ripple.style.height = ripple.style.width = Math.max(rect.width, rect.height) + 'px'
                        target.appendChild(ripple)
                    } else {
                        ripple.className = 'waves-ripple'
                    }
                    switch (opts.type) {
                        case 'center':
                            ripple.style.top = rect.height / 2 - ripple.offsetHeight / 2 + 'px'
                            ripple.style.left = rect.width / 2 - ripple.offsetWidth / 2 + 'px'
                            break
                        default:
                            ripple.style.top =
                                (e.pageY -
                                    rect.top -
                                    ripple.offsetHeight / 2 -
                                    document.documentElement.scrollTop || document.body.scrollTop) + 'px'
                            ripple.style.left =
                                (e.pageX -
                                    rect.left -
                                    ripple.offsetWidth / 2 -
                                    document.documentElement.scrollLeft || document.body.scrollLeft) + 'px'
                    }
                    ripple.style.backgroundColor = opts.color
                    ripple.className = 'waves-ripple z-active'
                    return false
                }
            },
            false
        )
    },
}